The three people guarding the ruins each had very few personal items that were reminders of their memories. That ring was related to Caris's youthful romance.
"These three people are indeed admirable," Shard whispered softly. Then, suddenly startled, he turned to look at the corner behind him. The silver moonlight in his hand lit up the area but revealed nothing there.
"Did I just feel someone watching me?"
"I felt it too, but it's vague, not sure what it was."
"Is anyone there?"
Shard called out quietly but received no response. After confirming that whatever had been spying on him had disappeared, he continued to examine the contents of the coffins.
He did not touch the urn or the ring, but carefully studied the map in the letter. The map was detailed, and he easily found the room where the gargoyles and mirrors were stored, and based on the directions, found the room where the "Maze Candle" was located.